Applies To:
  • CitectSCADA 4.x, 5.x
Summary:
The Softhub server used by the SQDNET driver does not currently support multiple requests to a single device. Therefore this has been prevented in the Citect driver by ensuring that:

1) the MaxPending driver parameter must be 1 for a port, and

2) multiple logical Citect devices with same physical address must be on the same port.

If 1) is not true then a Hardware alarm of value 0x57 will appear, and if 2) is not true then a Hardware alarm of value 0x58 will appear.

 

Solution:
If using the SQDNET driver and want multiple logical Citect devices, with the same physical address, then put them on the same port. 
Keywords:
 

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